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公开(公告)号：KR101474946B1
公开(公告)日：2014-12-19
申请号：KR1020097025351
申请日：2008-07-25
Applicant: 히다찌긴조꾸가부시끼가이사
CPC classification number: C21D6/00 , B22F2003/248 , B22F2998/10 , C22C33/0278 , C22C38/005 , C22C2202/02 , H01F1/0577 , H01F41/0293 , B22F9/023 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
Abstract: 본발명의 R-Fe-B계희토류소결자석은, 경희토류원소 Nd을주된희토류원소 R로서함유하는 RFeB형화합물결정립을주상으로서가지는 R-Fe-B계희토류소결자석으로서, 표면으로부터확산에의해상기소결자석에도입된중희토류원소 RH(RH는 Dy 및 Tb 중적어도일방)를함유한다. 입계의 R리치상에있어서의중희토류원소 RH의농도는, RFeB형화합물결정립의표면에있어서의중희토류원소 RH의농도보다낮고, RFeB형화합물결정립의중심부에있어서의중희토류원소 RH의농도보다높게조정되어있다.
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公开(公告)号：KR1020100037030A
公开(公告)日：2010-04-08
申请号：KR1020097025351
申请日：2008-07-25
Applicant: 히다찌긴조꾸가부시끼가이사
CPC classification number: C21D6/00 , B22F2003/248 , B22F2998/10 , C22C33/0278 , C22C38/005 , C22C2202/02 , H01F1/0577 , H01F41/0293 , B22F9/023 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
Abstract: Disclosed is an R-Fe-B rare earth sintered magnet which comprises, as the main phase, an RFeB compound crystal grain containing a light rare earth element Nd as the main rare earth element R. This R-Fe-B rare earth sintered magnet contains a heavy rare earth element RH (RH is at least one of Dy and Tb) introduced therein by diffusion from the surface. The concentration of the heavy rare earth element RH in the R-rich phase at the grain boundary is regulated so that it is lower than the concentration of the heavy rare earth element RH in the surface of the RFeB compound crystal grain, but higher than the concentration of the heavy rare earth element RH in the central portion of the RFeB compound crystal grain.
Abstract translation: 公开了一种R-Fe-B稀土烧结磁体，其包含作为主相的包含轻稀土元素Nd作为主要稀土元素R的RFeB复合晶粒。该R-Fe-B稀土烧结磁体 含有通过从表面扩散引入其中的重稀土元素RH（RH是Dy和Tb中的至少一种）。 调节晶界富R相中重稀土元素RH的浓度，使其低于RFeB复合晶粒表面的重稀土元素RH的浓度，但高于 重稀土元素RH在RFeB复合晶粒的中心部分的浓度。
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公开(公告)号：KR101474947B1
公开(公告)日：2014-12-19
申请号：KR1020097024735
申请日：2008-09-02
Applicant: 히다찌긴조꾸가부시끼가이사
CPC classification number: H01F1/0577 , B22F2999/00 , C22C33/0257 , C22C38/005 , C22C2202/02 , H01F41/0293 , B22F2207/01
Abstract: 본발명의 R-Fe-B계이방성소결자석은가벼운희토류원소 RL(Nd 및 Pr의적어도 1종)을주된희토류원소 R로서함유하는 RFeB형화합물을주상으로서갖고, 무거운희토류원소 RH(Dy 및 Tb으로이루어지는군으로부터선택된적어도 1종)를함유하는 R-Fe-B계이방성소결자석으로서, 주상의결정격자에서의 c축이소정방향으로배향하고, 자석의자극면으로부터깊이 500㎛까지의영역에서상기자극면에평행한면에대한 CuKα선을이용한 X선회절측정에서 2&thetas;가 6O.5 내지 61.5°의범위내에적어도 2개의회절피크가관찰되는부분을포함한다.
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公开(公告)号：KR1020100049503A
公开(公告)日：2010-05-12
申请号：KR1020097024735
申请日：2008-09-02
Applicant: 히다찌긴조꾸가부시끼가이사
CPC classification number: H01F1/0577 , B22F2999/00 , C22C33/0257 , C22C38/005 , C22C2202/02 , H01F41/0293 , B22F2207/01
Abstract: An R-Fe-B anisotropic sintered magnet which comprises, as the main phase, an RFeB type compound containing a light rare-earth element (RL) (at least either of neodymium and praseodymium) as the main rare earth element (R) and contains a heavy rare-earth element (RH) (at least one member selected from the group consisting of dysprosium and terbium). In the main phase, the crystal lattice has a c-axis oriented in a given direction. When a plane which is located in the range of from the surface of a magnetic pole of the magnet to a depth of 500 μm from the surface and is parallel to the magnetic-pole surface is analyzed by X-ray diffractometry with a CuKα line, it gives a diffraction pattern which includes a part having at least two diffraction peaks in the 2Θ range of 60.5-61.5°.
Abstract translation: 一种R-Fe-B各向异性烧结磁体，其包含作为主相的含有稀土元素（RL）（钕和镨中的至少一种）作为主要稀土元素（R）的RFeB型化合物和 含有重稀土元素（RH）（选自镝和铽的至少一种）。 在主相中，晶格具有沿给定方向取向的c轴。 当使用CuKα线通过X射线衍射法分析位于从磁体的磁极表面到表面500μm并且平行于磁极表面的深度的范围内的平面时， 它给出了衍射图案，其包括在60.5-61.5°的2θ范围内具有至少两个衍射峰的部分。
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